EP 0786490 A3 19980408 - Production of acid soluble humates
Title (en)
Production of acid soluble humates
Title (de)
Herstellung von säurelöslichen Humaten
Title (fr)
Production d'humates soluble en milieu acide
Publication
Application
Priority
US 59227096 A 19960126
Abstract (en)
[origin: EP0786490A2] A method is disclosed for production of acid soluble humates. Humic acid bearing ores are sulfoalkylated under alkaline conditions to produce high solids humic acid concentrates which are soluble at pH as low as 0.5 and in yields of at least 70 percent.
IPC 1-7
IPC 8 full level
C07G 99/00 (2009.01); C08H 99/00 (2010.01)
CPC (source: EP KR US)
C05F 11/02 (2013.01 - EP US); C07G 1/00 (2013.01 - KR); C08H 99/00 (2013.01 - EP US)
Citation (search report)
- [X] US 3352902 A 19671114 - MOSCHOPEDIS SPIROS E
- [X] US 3034982 A 19620515 - MONROE KENNETH P
- [A] US 3398186 A 19680820 - SCHWARTZ NELSON N
- [A] US 3700728 A 19721024 - MOSCHOPEDIS SPEROS E, et al
Designated contracting state (EPC)
DE ES FR GB NL
DOCDB simple family (publication)
EP 0786490 A2 19970730; EP 0786490 A3 19980408; CA 2195338 A1 19970727; CA 2195338 C 20041130; JP 3790315 B2 20060628; JP H09216892 A 19970819; KR 100458404 B1 20050115; KR 970059264 A 19970812; MX 9700507 A 19970731; MY 116327 A 20031231; PL 186184 B1 20031128; PL 318051 A1 19970804; TW 454024 B 20010911; US 5663425 A 19970902
DOCDB simple family (application)
EP 97100876 A 19970121; CA 2195338 A 19970116; JP 2455797 A 19970124; KR 19970002170 A 19970125; MX 9700507 A 19970120; MY PI19970177 A 19970117; PL 31805197 A 19970121; TW 86100224 A 19970110; US 59227096 A 19960126